What Is the Cause of the Following Symptom of Pollution

question 62

Multiple Choice

What is the cause of the following symptom of pollution? There is a sharp drop in oxygen content but there is no algal bloom.

• A)Inorganic fertilizers were released nearby.
• B)Organic matter was released nearby.
• C)There is no oxygen in the water.
• D)Anaerobic bacteria are consuming most of the nutrients in the water.
• E)none of the above

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Definitions:

Total Fertility Rate

measures the average number of children a woman would have over her lifetime, based on current birth rates, which is a key indicator of population growth potential.

Rural Areas

Regions characterized by low population density, agricultural or natural landscapes, and often a lack of large-scale infrastructure.

Noise Pollution

Unwanted or harmful outdoor sound that is produced by industrial or human activities, affecting the health and well-being of humans and wildlife.

Urban Dwellers

Individuals who live in densely populated areas known as cities or towns, often experiencing a lifestyle that contrasts with rural living.